SDR KY7A20260716001

Service difficulty report · Controller · Frchld SA227DC

Difficulty date: July 16, 2026
Submitted: July 20, 2026
Operation: Air carrier
Aircraft: N820DC
Make and model: Frchld SA227DC
Aircraft serial: DC820B
Aircraft time: 42,608 hours, 45,566 cycles
System (JASC): 2160 · Cabin Temperature Control System
Part: Controller
Part number: HYLZ504341
Part serial: 987F
Condition: Faulted
Location: Zone 100
Stage of operation: CL
How discovered: O
Nature of condition: M, B
Precautionary procedure: A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

SMOKE IN CABIN, A/C BLOWING EXTREMELY HOT AIR. EMERGENCY DECLARED AND AIRCRAFT RETURNED TO FIELD. R & R RH FLOW CONTROL VALVE IAW SA227 MM 21-10-20, R+R LH+RH MIXING VALVES IAW SA227 MM 21-40-00, R+R CABIN TEMP CONTROLLER IAW SA227 MM 21-60-00, OPS + LEAK CHECKS GOOD. RTS CHECK C/W